If you already have a wordpress powered website, you should consider the Facebook Connect WordPress Plugin by Sociable. It’s a very well documented community builder, that will enable people that have Facebook account to register and sign in to your blog using their Facebook identity.
The plug-in will also import the basic profile for the user to your blog, and provide public profile pages for each of your members. A sidebar widget will keep track of recent additions to your community, Facebook-style, and a members page will also give you an overview of all your blog users. Read more










